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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME COMPONENTS --
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4 -- --
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5 -- SYSTEM.MULTIPROCESSORS.DISPATCHING_DOMAINS --
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6 -- --
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7 -- B o d y --
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8 -- --
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131
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9 -- Copyright (C) 2011-2018, Free Software Foundation, Inc. --
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111
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10 -- --
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11 -- GNARL is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNARL was developed by the GNARL team at Florida State University. --
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28 -- Extensive contributions were provided by Ada Core Technologies, Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- Body used on unimplemented targets, where the operating system does not
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33 -- support setting task affinities.
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34
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35 package body System.Multiprocessors.Dispatching_Domains is
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36
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37 -----------------------
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38 -- Local subprograms --
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39 -----------------------
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40
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41 procedure Freeze_Dispatching_Domains;
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42 pragma Export
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43 (Ada, Freeze_Dispatching_Domains, "__gnat_freeze_dispatching_domains");
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44 -- Signal the time when no new dispatching domains can be created. It
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45 -- should be called before the environment task calls the main procedure
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46 -- (and after the elaboration code), so the binder-generated file needs to
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47 -- import and call this procedure.
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48
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49 -----------------
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50 -- Assign_Task --
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51 -----------------
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52
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53 procedure Assign_Task
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54 (Domain : in out Dispatching_Domain;
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55 CPU : CPU_Range := Not_A_Specific_CPU;
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56 T : Ada.Task_Identification.Task_Id :=
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57 Ada.Task_Identification.Current_Task)
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58 is
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59 pragma Unreferenced (Domain, CPU, T);
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60 begin
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61 raise Dispatching_Domain_Error with "dispatching domains not supported";
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62 end Assign_Task;
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63
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64 ------------
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65 -- Create --
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66 ------------
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67
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68 function Create (First : CPU; Last : CPU_Range) return Dispatching_Domain is
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69 pragma Unreferenced (First, Last);
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70 begin
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71 return raise Dispatching_Domain_Error with
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72 "dispatching domains not supported";
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73 end Create;
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74
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75 function Create (Set : CPU_Set) return Dispatching_Domain is
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76 pragma Unreferenced (Set);
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77 begin
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78 return raise Dispatching_Domain_Error with
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79 "dispatching domains not supported";
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80 end Create;
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81
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82 -----------------------------
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83 -- Delay_Until_And_Set_CPU --
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84 -----------------------------
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85
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86 procedure Delay_Until_And_Set_CPU
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87 (Delay_Until_Time : Ada.Real_Time.Time;
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88 CPU : CPU_Range)
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89 is
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90 pragma Unreferenced (Delay_Until_Time, CPU);
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91 begin
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92 raise Dispatching_Domain_Error with "dispatching domains not supported";
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93 end Delay_Until_And_Set_CPU;
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94
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95 --------------------------------
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96 -- Freeze_Dispatching_Domains --
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97 --------------------------------
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98
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99 procedure Freeze_Dispatching_Domains is
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100 begin
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101 null;
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102 end Freeze_Dispatching_Domains;
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103
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104 -------------
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105 -- Get_CPU --
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106 -------------
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107
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108 function Get_CPU
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109 (T : Ada.Task_Identification.Task_Id :=
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110 Ada.Task_Identification.Current_Task) return CPU_Range
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111 is
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112 pragma Unreferenced (T);
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113 begin
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114 return Not_A_Specific_CPU;
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115 end Get_CPU;
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116
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117 -----------------
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118 -- Get_CPU_Set --
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119 -----------------
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120
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121 function Get_CPU_Set (Domain : Dispatching_Domain) return CPU_Set is
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122 pragma Unreferenced (Domain);
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123 begin
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124 return raise Dispatching_Domain_Error
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125 with "dispatching domains not supported";
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126 end Get_CPU_Set;
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127
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128 ----------------------------
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129 -- Get_Dispatching_Domain --
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130 ----------------------------
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131
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132 function Get_Dispatching_Domain
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133 (T : Ada.Task_Identification.Task_Id :=
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134 Ada.Task_Identification.Current_Task) return Dispatching_Domain
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135 is
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136 pragma Unreferenced (T);
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137 begin
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138 return System_Dispatching_Domain;
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139 end Get_Dispatching_Domain;
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140
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141 -------------------
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142 -- Get_First_CPU --
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143 -------------------
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144
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145 function Get_First_CPU (Domain : Dispatching_Domain) return CPU is
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146 pragma Unreferenced (Domain);
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147 begin
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148 return CPU'First;
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149 end Get_First_CPU;
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150
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151 ------------------
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152 -- Get_Last_CPU --
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153 ------------------
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154
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155 function Get_Last_CPU (Domain : Dispatching_Domain) return CPU_Range is
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156 pragma Unreferenced (Domain);
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157 begin
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158 return Number_Of_CPUs;
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159 end Get_Last_CPU;
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160
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161 -------------
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162 -- Set_CPU --
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163 -------------
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164
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165 procedure Set_CPU
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166 (CPU : CPU_Range;
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167 T : Ada.Task_Identification.Task_Id :=
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168 Ada.Task_Identification.Current_Task)
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169 is
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170 pragma Unreferenced (CPU, T);
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171 begin
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172 raise Dispatching_Domain_Error with "dispatching domains not supported";
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173 end Set_CPU;
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174
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175 end System.Multiprocessors.Dispatching_Domains;
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